PZEM-008 Din Rail Electricity Digital Power Energy Meter Watt Kwh Wattmeter Monitor Ammeter Voltmeter AC 50-300V 100A with LCD Display Specifications: Material: PC flame retardant material 1. Voltage Measurement Range: AC50～300V Starting Test Voltage: 50V Accuracy: ±1% 2. Current Measurement Range: 0～100A Display Frmat: ＜10A Display Such As: 9.99A ＜100A Display Such As: 99.9A Starting Test Current: 0.02A Accuracy: ±1% 3. Active Power Measurement Range: 0～30kW Display Format: ＜10W Display Such As: 9.99W ＜100W Display Such As: 99.9W ＜1000W Display Such As: 999W ＜10000W Display Such As: 9.99kW ≥10000W Display Such As: 30.0kW Starting Test Power: 0.5W Accuracy: ±1% 4. Energy Measurement Range: 0～1999kWh Display Format: ＜10kWh Display Such As: 9.99kWh ＜100kWh Display Such As: 99.9kWh ＜1000kWh Display Such As: 999kWh ＜10000kWh Display Such As: 1999kWh Over the test range will maintain the data, otherwise you reset it. Accuracy: ±1% Other Function 1. Backlight Control The backlight can be turned on or off by short press the key 2. Reset Energy Long press the key over 3 seconds until the energy data flash, then release the key, short press the key again to reset the energy, otherwise after 3 seconds it will stop flashing and the energy will not be reset. 3. Data Storage  When the power off, the energy data and backlight status can be saved. Item Size: 78 * 65 * 35mm /3.07 * 2.56 * 1.37in Item Weight: 96g / 3.38oz Package Weight: 127g / 4.47oz Package Size: 9.2 * 7.5 * 6cm / 3.62 * 2.95 * 2.36in